DC to DC Power Supplies (Converters)
Synchronous Buck Controllers convert 22 V to 0.8 V.
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Press Release Summary:
With integrated 5 V LDO bias, Models SP6133 and SP6136 drive pair of external N-channel FETs switching at 300 kHz and 600 kHz frequencies, respectively, from single voltage rail for POL applications. Achieving efficiencies up to 97%, devices have input voltage from 4.5-24 V with duty cycles down to 3.5%, enabling direct conversion from high input voltage to low output voltage in single step. Units are housed in 3 x 3 mm QFN16 packaging with temperature range of -40 to +85°C.
Original Press Release:
Sipex Feature-Rich Wide Input Range Synchronous Buck Controllers Convert 22V Directly to 0.8V in a Single Step
Duty Cycle Limitations Solved With SP6133 and SP6136 Achieving Efficiencies Up to 97%
MILPITAS, Calif., Sept. 7 /-- Sipex Corporation today announced two new single-rail synchronous buck controllers, the SP6133 and SP6136. With an integrated 5V LDO bias, the SP6133 and SP6136 are designed to drive a pair of external N-Channel FETs switching at 300kHz (SP6133) and 600kHz (SP6136) frequencies from a single voltage rail for point of load applications. These devices have a wide input voltage range from 4.5V to 24V with duty cycles down to 3.5%, enabling direct conversion from high input voltage to low output voltages in a single step, eliminating the need for intermediate bus conversion.
The SP6133 / SP6136 give the designer a unique combination of features:
-- Programmable start-up UVLO sets the minimum input voltage for safe operation
-- Internal VCC UVLO ensures the controller has sufficient voltage to properly operate
-- PWRGD output with adjustable delay indicates when the output voltage is in regulation eliminating the need for additional supervisory circuits
-- Hiccup-mode restart implemented into lossless current sense, thermal shutdown, and short circuit protection features
-- High-current gate drivers enable output currents up to 30A
"Sipex is committed to expanding its portfolio to meet customer needs by launching our first single-rail PWM controllers providing high flexibility and multiple protection features," said Jules Farago, Senior Technical Marketing Manager. "These feature-rich ICs are the first in the family of single-rail PWM controllers from Sipex. They provide sequencing and tracking solutions to meet requirements demanded by today's system designers."
Pricing and Availability
The SP6133 and SP6136 are available in small 3x3mm QFN16 packaging, in an extended temperature range from -40 degrees C to +85 degrees C. Pricing is $1.50 in 1K units. Datasheets and additional support documentation can be found at www.sipex.com .
About Sipex Corporation
Sipex Corporation is an analog semiconductor company that addresses standard linear and application specific standard products (ASSP) for customer systems that are primarily targeted at the consumer, networking and industrial markets. The products are categorized into three synergistic areas of power management, interface and optical storage. Sipex is a global company with operations in Asia, Europe and North America. It is the mission of the company to create innovative analog products that enable customers to produce differentiated products. For more information about Sipex, visit www.sipex.com .
CONTACT: Jules Farago, Senior Technical Marketing Manager of Sipex Corporation, +1-408-635-7400, or fax, +1-408-935-7678, or jfarago@sipex.com
